Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof
Patent
1994-10-17
1996-04-23
Medley, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
81156, 811564, 811566, 252 875, 252 88, 4273934, D06M 15576
Patent
active
055099394
ABSTRACT:
Substrates are made oil-, water- and soil-repellent and/or provided with soil-relase properties by applying to them urea linkage-containing alkoxypolyoxyalkylene fluorocarbamates prepared by reacting (a) at least one polyisocyanate which contains at least three isocyanate groups with (b) at least one fluorochemical reagent which contains one functional group which has at least one H and at least two C atoms each of which contains at least two F atoms, (c) at least one hydrophilic, water-solvatable reagent which contains a single functional group which has at least one reactive H, (d) at least one reagent which contains one reactive H and which on reaction with an isocyanate group yields functionality which has abeyant chemical reactivity with fibrous substrates and (e) then with water, reactants (b), (c) and (d) being reacted with 55% to 95% of said isocyanate groups, and water with the remainder.
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U.S. Appln. Ser. No. 07/790097 filed Nov. 6, 1991 (pending in Group 1201--Continuation-in-part of Appln. Ser. No. 459,060 filed Dec. 29, 1989) .
E. I. Du Pont de Nemours and Company
Medley Margaret
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